Who is Orthokeratology (OK Therapy) suitable for?
Can I use OK therapy if I have myopia or hyperopia?
OK-therapy can be used to correct myopia up to – 8.00 diopters, hyperopia up to + 4.00 diopters, astigmatism up to – 5.00 diopters and presbyopia.
Can I use OK therapy if I have one myopic eye and the other farsighted?
In this case, a suitable lens design is selected for each type of refractive error.
At what age can OK therapy be used?
OK-therapy can be used in children from 6 years old and in adults of any age.
Is OK therapy used to correct presbyopia?
Yes, such a correction is possible.
What is the maximum vision correction possible with OK therapy?
OK-therapy can be used to correct myopia (0.5-8 diopters), hyperopia (0.5-4 diopters), astigmatism (0.5-5 diopters) and presbyopia.
What problems can arise?
What happens if I can't put on my lenses one night?
The effect of OK therapy will gradually diminish, but good vision will last for at least 20 hours.
What happens if the lens breaks or I lose it?
If you lose or break your lenses, you should replace them as soon as possible.
Are there any contraindications?
Yes, it is necessary to take into account the clinical condition of each patient in order to exclude possible absolute or relative contraindications.
Do OK lenses interfere with your sleep?
No, they do not interfere.
How it works?
How long does it take to adapt to OK lenses?
Adaptation takes about 4 weeks and requires 4 visits, sometimes longer depending on the case.
How long does OK lenses last?
The effect of “good vision” persists with OK-therapy for about 20 to 30 hours, however, high stable visual acuity is achieved only by daily use of OK-lenses.
How long do I need to sleep with my lenses on?
The recommended sleep time in OK lenses is at least 7-8 hours.
How much sleep can I sleep with my lenses on?
No more than 10-12 hours. The time is determined by your specialist, depending on your individual characteristics.
Is it possible to permanently correct vision with OK lenses?
No, the effect of correction with OK lenses is completely reversible. When you stop using OK lenses, the corneas gradually return to their original state after a few days or weeks, depending on the duration of wearing OK lenses, and on the specific characteristics of each cornea. This is a great advantage because lens wear can be discontinued if necessary and the corneas return to their original state without any consequences.
Can OK lenses be combined with other methods of myopia treatment?
Orthokeratology (OK-therapy) can be combined with any other medical and functional methods of treating myopia at the discretion of the attending physician.
Cancellation of wearing OK lenses is not required.
If medication is prescribed (instillation of drops), then it should be carried out before the selection of orthokeratological lenses.
If, in addition to OK therapy, any drug treatment for accommodation disorders is required, the last instillation of any drops should be done no later than one hour before putting on the lenses.
How do you know if myopia is progressing?
An objective way to assess the progression of myopia in children and adolescents is to measure the length of the anteroposterior segment of the eye (PZO) using ultrasound or optical biometrics at least 2 times a year (with an interval of 6 months)
No break in wearing OK lenses is required!
To stabilize myopia, it is extremely important to constantly maintain a high visual acuity due to daily donning and exposure to an orthokeratological lens.
We measure our patients the length of the anteroposterior segment of the eye (APO) using optical biometrics – the most accurate method for measuring the length of the eye, in order to add other treatments in a timely manner. To measure the length of the eye and control the progression of myopia, you can contact our clinic.
Can I have surgery after wearing OK lenses?
Orthokeratology does not exclude the transition to other means of vision correction, as well as subsequent refractive surgery.
As a result of the timely selection of OK lenses for children and adolescents, the rate of myopia progression decreases. This enables refractive surgeons to perform more safe interventions in patients with moderate to mild myopia rather than high myopia.
Before surgery, you need to cancel wearing OCL for a long period (6 months) to ensure full restoration of the original corneal geometry.
Only the doctor of the specialized office where the selection was carried out can determine exactly when the geometry of your cornea has been restored.